books.google.com - This detailed study of Henry Clay and the American System -- a program of vigorous economic nationalism dependent on active government and constitutional aspects of what was perhaps Clay&#39;s greatest contribution to national policy, a contribution that has received surprisingly little study until now.During...http://books.google.com/books/about/Henry_Clay_and_the_American_System.html?id=ev9GdFnnFtIC&q=United&utm_source=gb-gplus-shareHenry Clay and the American System